Ag grid sizeColumnsToFit only when there is space available in the total grid width

Question

Is there some function available to adjust the column width to fit the entire grid (basically call the following

api.sizeColumnsToFit()

only when there are not enough headers to fill in the empty space available in the total width.

Answer 1

i know its a bit late, but you know... better too late than never ;-)

  /**
   * resizes the columns to fit the width of the grid
   * @param allowShrink if false, columns will NOT be resized when there is no "empty" horizontal space
   */
  public resizeColumnsToFit(allowShrink = true) {
    if (this.gridApi) {
      if (allowShrink) {
        this.gridApi.sizeColumnsToFit();
      } else {
        /**
         * this is a "hacK" - there is no way to check if there is "empty" space in the grid using the
         * public grid api - we have to use the internal tools here.
         * it could be that some of this apis will change in future releases
         */
        const panel = this.gridApi["gridPanel"];
        const availableWidth = this.gridApi["gridPanel"].eBodyViewport.clientWidth;
        const columns = this.gridApi["gridPanel"]["columnController"].getAllDisplayedColumns();
        const usedWidth = this.gridApi["gridPanel"]["columnController"].getWidthOfColsInList(columns);

        if (usedWidth < availableWidth) {
          this.gridApi.sizeColumnsToFit();
        }
      }
    }
  }

You can use this method to conditionally resize the columns of the grid. Use resizeColumnsToFit(false) if you don't want to resize the columns when there is a horizontal scroll bar.

Credit: https://github.com/ag-grid/ag-grid/issues/1772